Spacing adjustment device for scissors

Abstract

The present invention relates to scissors, and more particularly, to a gap adjustment device for scissors, including a fixed portion that penetrates an open portion of a first blade and a second blade to combine the first blade and the second blade, a pair of ball bearings that are inserted into the fixed portion, a thrust bearing that is formed between the ball bearings, a pressurizing rod that is inserted into the first blade side to pressurize the thrust bearing, and a gap between the first blade and the second blade is adjusted by the fixed portion and the pressurizing rod, so that the gap can be easily adjusted even if the gap between the first blade and the second blade changes, thereby minimizing resistance between the blades and maintaining hair cutting performance.

Claims

1. A scissor spacing adjustment device, comprising scissors having a first scissor blade (500) and a second scissor blade (600) for cutting hair, characterized in that, include: The fixing part (300) passes through the opening (O) of the first scissor blade (500) and the second scissor blade (600), and is able to combine the first scissor blade (500) and the second scissor blade (600). A pair of ball bearings (100) are in contact with the inner surface of the open portion (O) and the fixing portion (300) is inserted inward. Furthermore, an interval adjustment member is formed between the pair of ball bearings (100) to adjust the interval between the first scissor blade (500) and the second scissor blade (600); The interval adjustment component includes: A thrust bearing (200) is formed between the ball bearings (100); A pressure rod (400) is inserted into one side of the first shear blade (500) to pressurize the thrust bearing (200). Furthermore, the distance between the first scissor blade (500) and the second scissor blade (600) can be adjusted by moving the pressure rod (400) back and forth. The first scissor blade (500) includes: The first scissor blade body (510) has a first open portion (O1) and is plate-shaped; The first connecting edge (520) protrudes inward from the side in the direction of the second shear blade (600) in the first open portion (O1). The second scissor blade (600) includes: The second scissor blade body (610) has a second open portion (O2) and is plate-shaped; The second connecting edge (620) protrudes inward from the side of the first shear blade (500) in the second open portion (O2). Furthermore, the first open portion (O1) and the second open portion (O2) are interconnected to form the open portion (O). A portion of the outer wheel of the ball bearing (100) protrudes and is hooked to the first hooking edge (520) and the second hooking edge (620); The ball bearing (100) includes: A first ball bearing (110) is formed in the first opening (O1); A second ball bearing (120) is formed in the second opening (O2). A portion of the outer wheel (111) of the first ball bearing (110) has a first protrusion (111-1) that protrudes and is hooked onto the first hooking ridge (520). A portion of the outer wheel (121) of the second ball bearing (120) has a second protrusion (121-1) that protrudes and is hooked onto the second hooking ridge (620). The thrust bearing (200) includes: A rotating body (210) is disposed between the first hook edge (520) and the second hook edge (620); A contact plate (230), which is disposed on the inner side of the first mounting ridge (520), is in contact with the rotating body (210). Furthermore, a mounting groove (231) is formed on the contact plate (230) for mounting the rotating body (210).

2. The scissors interval adjustment device according to claim 1, characterized in that, The first mounting edge (520) has a through hole (521) for inserting the pressure rod (400). The pressure bar (400) includes: The pressing rod main body (410) is screwed to the through hole (521); an insertion groove (420) is recessed on one side surface of the pressing rod main body (410) so that a tool can be inserted. The fixing part (300) inserted into the first opening part (O1) and the second opening part (O2) includes: A first fixing part (310) inserted into each of the opening parts (O1, O2) and contacting the inner ring (112) of the ball bearing (100); A second fixing part (320) inserted into the inside of the first fixing part (310) and screwed to each other. The first fixing part (310) includes: A first cylindrical part (311) inserted into the inside of the first opening part (O1) and the second opening part (O2), and the second fixing part (320) is coupled inside thereof; A first wing part (312) formed at one end of the first cylindrical part (311) in a plate shape for covering the first ball bearing (110); The second fixing part (320) includes: A second cylindrical part (321) screwed to the inside of the first cylindrical part (311); A second wing part (322) formed at the other end of the second cylindrical part (321) in a plate shape for covering the second ball bearing (120).

3. The interval adjusting device of the scissors according to claim 2, characterized in that Between the radius (R2) from the center line (CL) of the first opening part (O1) to the end of the first wing part (312), the radius (R1) from the center line (CL) of the first opening part (O1) to the lower end of the pressing rod main body (410), and the radius (R3) from the center line (CL) of the first opening part (O1) to the lower end of the insertion groove (420), the following mathematical formula 1 is satisfied: R3 < R2 < R1 (mathematical formula 1).

4. The interval adjusting device of the scissors according to claim 3, characterized in that A plurality of through holes (521) are formed around the opening part (O); A plurality of pressing rods (400) are respectively inserted into the plurality of through holes (521).

5. The interval adjusting device of the scissors according to claim 4, characterized in that The thrust bearing (200) is formed by a rotating body (210), an upper contact plate (230), and a lower contact plate.

6. The interval adjusting device of the scissors according to claim 5, characterized in that The lower contact plate uses the inner side surface of the second hanging edge (620) protruding inwardly formed integrally with the second scissor blade as the inner side surface of the lower contact plate. Therefore, there is no need to use a separate lower contact plate, and thus the thickness of the scissors can be made thinner.

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